Intel SR6850HW4 - Manual (Page 72)

Power Supply Intel® Server Platform SR6850HW4 TPS
Revision 1.0
Intel order number D23151-001
60
5.4.8.2 I/O Port Expander
The power supply contains a serial I/O port expander, Philips* PCF8575 or approved
equivalent. The address is either 0x4C or 0x4E, depending on address bit 0xA0.
Table 36. I/O Port Expander Signals
Signal Name I/O Port
-OC +12V P0
-Fan_Fault P1
-UV P2
-OV P3
VIN_GOOD P4
P_GOOD P5
-PS_STATUS P6
AC_PRFAIL P7
-PFC_OTP P10
POWER_LEVEL_1 P11
POWER_LEVEL_1 P12
POWER_LEVEL_1 P13
POWER_LEVEL_1 P14
High P15,P16,P17
Table 37. I/O Port Expander Codes
Signal Name Normal Off Normal On +12V OC AC Dropout Low AC No AC
-OC +12V 1 1 0 1 1 1
Not Used 1 1 1 1 1 1
-UV 1 1 1 or 0 1 1 1
-OV 1 1 1 1 1 1
VIN_GOOD 1 1 1 1 or 0 0 0
P_GOOD 0 1 0 0 0 0
-PS_STATUS 1 0 1 1 1 1
-AC_PRFAIL 1 1 1 0 1 1
Note : The No AC column refers to the status of the I/O port when only the external +3.3
stby
bus voltage is
available.
5.4.8.3 Temperature Sensors
A Philips* NE1617A or equivalent temperature sensor is located near the air inlet of the supply.
The address is either 0x34 or 0x9C depending on address bit 0xA0. A second sensor is near
the exhaust outlet.